公开(公告)号：US20240021161A1

公开(公告)日：2024-01-18

申请号：US18039982

申请日：2020-12-04

Applicant: Sharp Kabushiki Kaisha

Inventor： Ryo YONEBAYASHI

IPC: G09G3/3241 ,  G09G3/3266

CPC classification number: G09G3/3241 ,  G09G3/3266 ,  G09G2310/0262 ,  G09G2300/0852 ,  G09G2310/08

Abstract: A pixel circuit of a display device includes: a light-emitting element; a drive transistor; a write control transistor having one conductive terminal connected to a data line and a control terminal connected to a scanning line; a first capacitor provided between a control terminal of the drive transistor and a conductive terminal of the drive transistor on the light-emitting element side; a second capacitor provided between another conductive terminal of the write control transistor and the control terminal of the drive transistor; and a mode selection circuit provided in parallel to the second capacitor and configured to cause a short-circuit and an open-circuit between electrodes of the second capacitor in accordance with a voltage of a mode selection line. Accordingly, a display device capable of easily performing gradation control is provided.

公开(公告)号：US20200064669A1

公开(公告)日：2020-02-27

申请号：US16495459

申请日：2018-03-28

Applicant: Sharp Kabushiki Kaisha

Inventor： Takayuki NISHIYAMA ,  Ryo YONEBAYASHI ,  Kohhei TANAKA

IPC: G02F1/1368 ,  H01L27/12 ,  G02F1/1362 ,  G02F1/1345 ,  G09G3/36

Abstract: Provided is a technique for decreasing the deterioration of the display quality, while reducing electric power consumption. An active matrix substrate includes a plurality of gate lines Gn, Gn+1, a plurality of source lines S, a plurality of pixels PIX that are provided with pixel electrodes 11, respectively, and pixel switching elements 12 each of which is connected with the pixel electrode 11, the gate line, and the source line. The pixel electrode 11 has a connection portion 11b to which the pixel switching element 12 is connected. The connection portion 11b extends to an adjacent one of the pixels that is adjacent to the pixel where the pixel electrode 11 is provided, in a gate line extending direction. A data signal supplied by a source line has a polarity that is opposite to a polarity of a data signal supplied by an source line adjacent to the source line, and that is inverted every vertical period.

公开(公告)号：US20170123253A1

公开(公告)日：2017-05-04

申请号：US15306825

申请日：2015-04-27

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Yasuhiro SUGITA ,  Kohhei TANAKA ,  Takeshi NOMA ,  Takayuki NISHIYAMA ,  Ryo YONEBAYASHI ,  Kenshi TADA ,  Shinji YAMAGISHI ,  Jean MUGIRANEZA

IPC: G02F1/1333 ,  G02F1/1368 ,  G06F3/041 ,  G02F1/1339 ,  G02F1/1362 ,  G06F3/044 ,  G02F1/1343

CPC classification number: G02F1/13338 ,  G02F1/1333 ,  G02F1/1339 ,  G02F1/1343 ,  G02F1/134336 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2201/121 ,  G02F2201/123 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04108

Abstract: Provided is a sensor-equipped display device (1) that includes: a first substrate (20a); a second substrate (20b) opposed to the first substrate (20a); a liquid crystal layer (LC); a plurality of first lines (15) extending in a first direction in a pixel area (AA); second lines extending in a second direction that is different from the first direction; pixel switching elements that are provided for pixels, respectively, and are connected to the first lines and the second lines; a plurality of sensor electrodes (SE, DL) provided at positions that overlap the pixel area on at least one of the first substrate and the second substrate, for detecting the contact or approach of the object; and a plurality of sensor lead-out lines that are provided in parallel to the first lines or the second lines in the pixel area on the first substrate, and are connected to the sensor electrodes, respectively.

公开(公告)号：US20170047038A1

公开(公告)日：2017-02-16

申请号：US15307040

申请日：2015-04-22

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Takeshi NOMA ,  Kohhei TANAKA ,  Takayuki NISHIYAMA ,  Ryo YONEBAYASHI

IPC: G09G3/36 ,  G02F1/1335 ,  G02F1/1368 ,  G02F1/1362

CPC classification number: G09G3/3696 ,  G02F1/133345 ,  G02F1/133512 ,  G02F1/133514 ,  G02F1/134336 ,  G02F1/136 ,  G02F1/136286 ,  G02F1/1368 ,  G02F2001/13606 ,  G02F2001/136218 ,  G02F2201/123 ,  G09F9/30 ,  G09F9/35 ,  G09G3/20 ,  G09G3/36 ,  G09G3/3677 ,  G09G3/3688 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2310/0281 ,  G09G2310/0291 ,  G09G2310/08

Abstract: To reduce the parasitic capacitance of a driving circuit and definitely switches a gate line to a selection state, an active matrix substrate is provided. The active matrix substrate includes a driving circuit that switches a gate line (13G) to a selection state in a pixel region defined by a source line (15S) and the gate line (13G). The driving circuit includes: a plurality of switching elements including an output switching element (TFT-F) that supplies a selection voltage to the gate line; and an internal line (netA) to which a gate terminal of the output switching element (TFT-F) and at least a first switching element of the switching elements other than the output switching element are connected. The active matrix substrate includes a reduction part (C1 and C2) that reduce the parasitic capacitance of the driving circuit in the pixel region in which at least one of the internal line and the first switching element is located.

Abstract translation: 为了减小驱动电路的寄生电容，确切地将栅极线切换到选择状态，提供有源矩阵基板。 有源矩阵基板包括驱动电路，其将栅极线（13G）切换到由源极线（15S）和栅极线（13G）限定的像素区域中的选择状态。 驱动电路包括：多个开关元件，包括向栅极线提供选择电压的输出开关元件（TFT-F）; 以及连接输出开关元件（TFT-F）的栅极端子和除了输出开关元件之外的开关元件的至少第一开关元件的内部线路（netA）。 有源矩阵基板包括减少部分（C1和C2），其减少驱动电路在内部线路和第一开关元件中的至少一个所在的像素区域中的寄生电容。

公开(公告)号：US20170047033A1

公开(公告)日：2017-02-16

申请号：US15305798

申请日：2015-04-21

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Kohhei TANAKA ,  Takayuki NISHIYAMA ,  Takeshi NOMA ,  Ryo YONEBAYASHI

IPC: G09G3/36 ,  G02F1/1368 ,  G02F1/1335 ,  G02F1/1362

CPC classification number: G09G3/3677 ,  G02F1/133514 ,  G02F1/136286 ,  G02F1/1368 ,  G09G3/3688 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2310/08 ,  G09G2320/0223 ,  G09G2320/045

Abstract: A technique of, in the case of changing, at predetermined time intervals, a drive circuit for switching a gate line to a selected state, preventing a stopped drive circuit from malfunctioning is provided. Each of a plurality of drive circuits provided for each gate line in an active-matrix substrate includes: a selection circuit unit including an output switching element that is turned on to apply a voltage to the gate line in response to a control signal; an internal line connected to a gate terminal of the output switching element and the gate line; and a potential control circuit unit connected to the internal line for controlling a potential of the internal line in response to the control signal. At predetermined time intervals, a signal supply unit: supplies, to at least one of the plurality of drive circuits, a potential control signal so that the potential of the internal line is controlled to be lower than a threshold voltage of the output switching element by the potential control circuit unit; and supplies, to each of the other drive circuits, a drive signal so that a selection voltage is applied to the gate line by the selection circuit unit.

Abstract translation: 在以预定的时间间隔改变用于将栅极线切换到选择状态的驱动电路的情况下，防止停止的驱动电路发生故障的技术。 为有源矩阵基板中的每个栅极线设置的多个驱动电路中的每一个包括：选择电路单元，其包括导通以响应于控制信号向栅极线施加电压的输出开关元件; 连接到输出开关元件的栅极端子和栅极线的内部线路; 以及电位控制电路单元，连接到内部线路，用于响应于控制信号控制内部线路的电位。 在预定时间间隔，信号提供单元向多个驱动电路中的至少一个提供电位控制信号，使得内部线路的电位被控制为低于输出开关元件的阈值电压，由 电位控制电路单元; 并且向每个其他驱动电路提供驱动信号，使得通过选择电路单元将选择电压施加到栅极线。